The purpose of the present research is to evaluate sexual skills training on increasing marital satisfaction. Statistical population in this research was all women who refer to 71 private centers and 4 clinics of Karaj in 1389. In this population, 36 women were selected as the sample which their score was lower than cut point in Enrich (marital satisfaction questionnaire). These persons replaced randomly in two experiment and control groups. The instrument of this research was Enrich marital satisfaction questionnaire. The method of this research was pre-test, post-test with control group. Experimental group received (six hour sessions) sexual skills training .Both groups were tested and evaluated three times (pre-test post-test and follow-up).The data for the research hypotheses were analyzed by one- way covariance analysis (ANCOVA) and multi- variable covariance analysis (MANCOVA). The results showed that the sexual skills training increase couple's marital satisfaction.